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Determine the mass flow rate of hot water withdrawn from the tank during the shower and the average temperature of mixed water used for the shower.
Steam at 40degrees C condenses on the outside of a 6.40-m-long, 3.7-cm-diameter thin horizontal copper tube by cooling water that enters the tube at 25degress C at an average velocity of 2.15m/s.
Solve using the ideal-gas law, the generalized compressibility factor, and steam tables. Plot the percent error involved in the ideal-gas approximation against temperature, and discuss the result.
Determine the maximum thermal efficiency of the power plant. Why is it misleading to use the temperatures given to calculate this value?
Calculate the amount of work input a refrigerator needs to make ice cubes out of a tray of 0.25 kg of liquid water at 10 C.
A disk of 180 mm radius rotates at the constant rate w2=12 rad/sec with respect to arm CD, which itself rotates at the constant rate w1=8 rad/sec about the Y axis.
The inlet section of a vacuum cleaner is a rectangle, 1 in by 5 in. The blower is able to provide suction at 25 cubic feet per minute. What is the average velocity at the inlet, in m/s?
Verify your finite difference code solution against a semi-infinite slab solution. For this verification, use a constant surface heat flux boundary condition.
Determine the max discharge rate of water through the pipe. Determine how long it will take to empty the swimming pool completely.
The density of air is 1.22kg/m^3. Determine the volume rate of airflow in ft^3/s. What is the horsepower output of the fan?
Water is flowing in a 2cm radius pipe with a parabolic velocity profile, Vx(r)=Vmax[1-(r/ro)^2] where ro is the radius of the pipe, and the average velocity is 2m/s.
Determine: The systems coefficient of performance. The power required to service a 400kW cooling load. What would be the coefficient of performance if the compressor had and efficiency of 80%.
The mass of the steam is 1.2 lb, find the work in Btu and the specific volume in ft3/lb. Ignore the changes in the kinetic and the potential energies.
Assume the oil is a Newtonian fluid, and a linear velocity profile applies to the oil film. Determine the kinematic viscosity of the oil.
Express the finite difference formulation of the boundary nodes 0 and 8 for the case of no heat generation. Also obtain the finite difference formulation for the rate of heat transfer at the left bo
How much energy was input to the motor to perform this task? When the compressed air returns to room temperature, what will be its pressure?
Pressure in the radiator drops to 100kPa in 30 minutes. By how much does the air in the room change temperature? Assume the room volume remains constant.
K of the particle board is .170 W/mK. Estimate the heat flux through the wall and plot the temperature distribution through the composite wall.
A cylinder-piston arrangement contains 2.5 kg of ammonia at 0.8 MPa and 30 °C (State 1). Define State 3 and find volume (V3) and specific volume (v3) at State 3.
The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.5 m/s as it passes through the lowest point. What is the tension in the rope at that point?
Determine the power required to maintain the clean room's temperature by a reversible refrgeration cycle operating between hot and cold reservoir at 55DegF and 80DegF
The power required to service a 400kW cooling load. What would be the coefficient of performance if the compressor had and efficiency of 80%.
Given these conditions, if the line operates for 16.0 hrs., determine the number of good parts produced and the number of parts removed from the line.
If a bar of SAE 1040 is to be turned with a high speed steel tool with a feed of 0.015" per revolution. Estimate the cutting speeds to get tool lives of 60 and 120 minutes.
If the rate of heat loss from the pipe is to be kept around 1000 Watts, determine the depth at which the pipe need to be buried.